recording a phone call with Skype

I have Audacity version 2.1.3. I am trying to set up podcast equipment so that I can record phone calls (I interview authors of books). I have a Yeti microphone that connects to my Windows 10 computer using a USB connection. I have the host interface set to WASAPI. When I set the recording device to Yeti Microphone loopback, I am able to record the voice of the person that I am calling, but my microphone does not record. If I put the recording device on Yeti Microphone, I am able to record my voice through my microphone but not the voice of the person on the phone. What am I doing wrong?

The best way to record Skype (or other voip) is to use software that is designed specifically for the job, such as Pamela for Skype.